id:A146246 - OEIS Search Results

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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 110-111-010 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 11, 21, 35, 67, 259, 945, 3949, 14269, 69629, 358835, 2304465, 14395141, 109376391, 851675891, 8461569139, 84383219157, 1033770596811, 12613520889815, 192843929142189, 2993789320611135 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.1.0.0.0` `.0.0.0.1.1.1.0.0` `.0.1.0.1.1.0.0.0` `.1.1.1.0.0.1.1.0` `.0.1.1.0.0.1.1.1` `.0.0.0.1.1.0.1.0` `.0.0.1.1.1.0.0.0` `.0.0.0.1.0.0.0.0`
	CROSSREFS	`Sequence in context: A109335 A086982 A145060 this_sequence A064832 A129638 A127624` `Adjacent sequences: A146243 A146244 A146245 this_sequence A146247 A146248 A146249`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

AT&T Labs Research